def 		snake_case__	(		lowercase = 1000					):
   return sum(2 * a * ((a - 1) // 2) for a in range(3							,				n + 1					)					)


if __name__ == "__main__":
 print(solution())
"""simple docstring"""



def 	_lowerCamelCase(	a				):
       return " ".join(
           "".join(word[::-1]				) if len(a				) > 4 else word for word in sentence.split()				)


if __name__ == "__main__":
   import doctest

   doctest.testmod()
   print(reverse_long_words("""Hey wollef sroirraw"""))
